Parallel bars



FIG. 1 is a perspective view of the parallel bars showing the new design.

FIG. 2 is a top plan view of the parallel bars.

FIG. 3 is a front elevation view of the parallel bars, the rear elevation is a mirror image of the front elevation; and,

FIG. 4 is a left side view of the parallel bars, the right side view is a mirror image of the left side view. 

The ornamental design for the parallel bars, as shown and described. 